C3P0 可使用properties 配置文件方式,将c3p0.properties放在classpath目录下,如果为WEB应用,放在WEB-INFclasses下
c3p0.properties
#
# This file is detritus from various testing attempts
# the values below may change, and often do not represent
# reasonable values for the parameters.
#
c3p0.jdbcUrl=jdbc:oracle:thin:@127.0.0.1:1521:chenchi
c3p0.driverClass=oracle.jdbc.driver.OracleDriver
c3p0.user=hbota2
c3p0.password=ty1234
c3p0.minPoolSize=3
c3p0.maxPoolSize=20
#c3p0.testConnectionOnCheckout=true
#c3p0.testConnectionOnCheckin=true
#c3p0.checkoutTimeout=2000
#c3p0.idleConnectionTestPeriod=5
#c3p0.maxConnectionAge=10
#c3p0.maxIdleTime=2
#c3p0.maxIdleTimeExcessConnections=1
#c3p0.propertyCycle=1
#c3p0.numHelperThreads=10
#c3p0.unreturnedConnectionTimeout=15
#c3p0.debugUnreturnedConnectionStackTraces=true
#c3p0.maxStatements=30
#c3p0.maxStatementsPerConnection=5
#c3p0.maxAdministrativeTaskTime=3
#c3p0.preferredTestQuery=SELECT 1
#c3p0.preferredTestQuery=SELECT a FROM emptyyukyuk WHERE a = 5
#c3p0.preferredTestQuery=SELECT a FROM testpbds WHERE a = 5
#c3p0.usesTraditionalReflectiveProxies=true
#c3p0.automaticTestTable=PoopyTestTable
#c3p0.acquireIncrement=4
#c3p0.acquireRetryDelay=1000
#c3p0.acquireRetryAttempts=60
#c3p0.connectionTesterClassName=com.mchange.v2.c3p0.test.AlwaysFailConnectionTester
#c3p0.initialPoolSize=10
com.mchange.v2.log.MLog=com.mchange.v2.log.log4j.Log4jMLog
#com.mchange.v2.log.MLog=com.mchange.v2.log.jdk14logging.Jdk14MLog
#com.mchange.v2.log.MLog=com.mchange.v2.log.FallbackMLog
com.mchange.v2.log.NameTransformer=com.mchange.v2.log.PackageNames
com.mchange.v2.log.FallbackMLog.DEFAULT_CUTOFF_LEVEL=ALL
#com.mchange.v2.c3p0.VMID=poop
java
代码
ComboPooledDataSource cpds = new ComboPooledDataSource();
Connection conn = cpds.getConnection();
//
业务代码
conn.close();